Liquid crystal display panel and method of manufacturing the same

ABSTRACT

In one embodiment, a liquid crystal display panel includes an array substrate and a counter substrate each having a display region and a peripheral region arranged adjacent to the display region. A resin layer is formed either one of the array substrate and the counter substrate. A protrusion in the shape of a wall is arranged on the resin layer with a gap between the protrusion and the substrate opposing the protrusion. A seal material is formed between the array substrate and the counter substrate, and arranged between a peripheral portion of the display region and the protrusion for attaching the array substrate and the counter substrate. A liquid crystal layer is formed in a surrounded region by the array substrate, the counter substrate and the seal material.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims the benefit of priority fromJapanese Patent Application No. 2010-267494, filed Nov. 30, 2010, theentire contents of which are incorporated herein by reference.

FIELD

Embodiments described herein relate generally to a liquid crystaldisplay panel.

BACKGROUND

The liquid crystal display panel is mainly used as display devices foran information equipment, such as a computer, and a visual equipment fora television receiving set, etc. Generally, the liquid crystal displaypanel has an array substrate, a counter substrate, and a liquid crystallayer held between the substrates. The array substrate and the countersubstrate have a display region, respectively. Between the arraysubstrate and the counter substrate, a plurality of pillar-shapedspacers is arranged as a spacer device, for example, and the gap betweenboth substrates is held uniformly.

The array substrate and the counter substrate are attached by a sealmaterial of the shape of a rectangular frame arranged outside thedisplay region of the both substrates. When forming the seal material, athermosetting resin is applied to the peripheral portion of the countersubstrate, for example, and the counter substrate and the arraysubstrate are attached while the seal material is thermally cured. Inthe above-mentioned liquid crystal display panel, the seal materialspreads on the array substrate and the counter substrate. In a liquidcrystal display panel with wide frame width, even if the seal materialspreads, the spread does not have a bad influence on the liquid crystaldisplay panel.

However, when the seal material spreads in the liquid crystal displaypanel with a narrow frame width, such as a liquid crystal display panelfor cellular phones, the spread have a bad influence on the liquidcrystal display panel. For example, if the seal material flows into thedisplay region, a defective display is caused. For this reason, in orderto prevent the seal material from flowing into the display region, it isnecessary to apply the seal material to a position near a substrate end.On the other hand, when the seal material has overflowed to theperipheries of the array substrate and the counter substrate, it becomesdifficult to divide the array substrate and the counter substraterespectively from mother glass substrates in a good state.

In order to avoid that the seal material becomes an obstacle whencutting the mother glass substrates, it is necessary to paste the sealmaterial departing from the peripheries of the respective arraysubstrate and the counter substrate to the display region side at someextent. Above point is one of the causes which cannot make the smallframe width of the liquid crystal display panel.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute aportion of the specification, illustrate embodiments of the invention,and together with the general description given above and the detaileddescription of the embodiments given below, serve to explain theprinciples of the invention.

FIG. 1 is a perspective diagram showing a liquid crystal display panelaccording to a first embodiment.

FIG. 2 is a cross-sectional view schematically showing the liquidcrystal display panel shown in FIG. 1.

FIG. 3 is a plan view schematically showing the liquid crystal displaypanel shown in FIG. 1.

FIG. 4 is a plan view schematically showing a portion of an arraysubstrate shown in FIG. 1 to FIG. 3.

FIG. 5 is an expanded cross-sectional view schematically showing theperipheral portion of the liquid crystal display panel taken along lineVII-VII in FIG. 3.

FIG. 6 is an expanded cross-sectional view schematically showing theperipheral portion of the liquid crystal display panel according toother example taken along line VII-VII in FIG. 3.

FIG. 7 is a plan view showing a state where an array pattern is formedon a mother glass substrate in a manufacturing process according to theembodiment.

FIG. 8 is a plan view showing the state where a plurality of arraysubstrates with a barrier pattern is formed on the mother glasssubstrate following the process shown in FIG. 7.

FIG. 9 is a plan view showing the state where a plurality of countersubstrates is formed on the mother glass substrate.

FIG. 10 is a plan view showing the state where a seal material isapplied to the mother glass substrate following the process shown inFIG. 8.

FIG. 11 is a plan view showing the state where the respective motherglass substrates shown in FIG. 9 and FIG. 10 are attached through theseal material.

FIG. 12 is a cross-sectional view taken along line VIII-VIII in FIG. 11showing the state where the respective mother glass substrates areattached through the seal material.

FIG. 13 is an expanded cross-sectional view schematically showing theperipheral portion of the liquid crystal display panel according to asecond embodiment.

FIG. 14 is an expanded cross-sectional view schematically showing theperipheral portion of the liquid crystal display panel according to athird embodiment.

FIG. 15 is a cross-sectional view showing the state where the respectivemother glass substrates are attached through the seal material in themanufacturing process of the liquid crystal display panel according tothe third embodiment.

FIG. 16 shows a modification at the time of forming the barrier patternon the mother glass substrate, and is a plan view showing the statewhere a plurality of array substrates is formed on the mother glasssubstrate.

DETAILED DESCRIPTION OF THE INVENTION

A liquid crystal display panel according to an exemplary embodiment ofthe present invention will now be described with reference to theaccompanying drawings wherein the same or like reference numeralsdesignate the same or corresponding portions throughout the severalviews.

According to one embodiment, a liquid crystal display panel includes anarray substrate having a display region and a peripheral region arrangedadjacent to the display region; a counter substrate having the displayregion and the peripheral region, and arranged opposing the arraysubstrate with a gap therebetween; a resin layer formed on theperipheral region of either one of the array substrate and the countersubstrate; a protrusion in the shape of a wall arranged on the resinlayer with a gap between the protrusion and the substrate opposing theprotrusion; a seal material formed between the array substrate and thecounter substrate, and arranged between a peripheral portion of thedisplay region and the protrusion for attaching the array substrate andthe counter substrate; and a liquid crystal layer formed in a surroundedregion by the array substrate, the counter substrate and the sealmaterial.

Hereafter, the liquid crystal display panel and the method ofmanufacturing the liquid crystal display panel according to the firstembodiment are explained in detail, referring to drawings. Firstly, astructure of the liquid crystal display panel is explained. In thisembodiment, the liquid crystal display panel is a COA (color filter onarray) type.

As shown in FIG. 1 and FIG. 2, the liquid crystal display panel isequipped with an array substrate 1, a counter substrate 2 arrangedopposing the array substrate 1 with a predetermined gap between thearray substrate 1 and the counter substrate 2, and a liquid crystallayer 3 held therebetween. A polarizing plate which is not illustratedis arranged at respective external surfaces of the array substrate 1 andthe counter substrate 2. A back light unit which is not illustrated isarranged at the external surface side of the array substrate 1. Each ofthe array substrate 1 and the counter substrate 2 has a rectangulardisplay region R1.

The array substrate 1 includes a glass substrate 11 as a transparentinsulating substrate. As shown in FIG. 4, a plurality of scanning lines17 are formed in the display region R1 on the glass substrate 11. Thescanning lines 17 extend in a row direction X orthogonally crossing witha column direction Y with an interval between adjacent scanning lines.Similarly, a plurality of signal lines 21 extend in a column direction Ywith an interval between adjacent signal lines 21 while intersecting theplurality of scanning lines 17 and forming a lattice shape with thescanning lines 17.

Here, the array substrate 1 and the counter substrate 2 include aplurality of pixel portions 20 of the shape of a matrix arranged in theregion surrounded with the plurality of scanning lines 17 and theplurality of signal lines 21. That is, each pixel portion 20 is formedin the region surrounded by adjacent two signal lines 21 and adjacenttwo scanning lines 17. A thin film transistor (TFT) as a switchingelement which is not illustrated is arranged in the pixel portions 20 ofthe array substrate 1, respectively. The TFT is arranged near anintersection portion with the scanning line 17 and the signal line 21 inmore detail.

As shown in FIG. 3, a seal material 51 which attaches the arraysubstrate 1 and the counter substrate 2 is formed at a peripheralportion of the display region R1, and also driving circuits 6 a and 6 bare arranged along the column direction Y. Moreover, protrusions 61 and62 of a barrier shape for preventing spread of the seal material 51 areformed outside the driving circuits 6 a and 6 b along with the sealmaterial 51.

FIG. 5 is an expanded cross-sectional view schematically showing theperipheral portion of the above-mentioned liquid crystal display paneltaken along line VII-VII of FIG. 3. In the display region R1, the TFT isformed, and also an interlayer insulating layer 18 and a protectioninsulating layer 23 formed of a SiO2 film and a SiN3 layer are arrangedon the glass substrate 11 although not illustrated. A color filter 4 ofa COA structure is laminated on the insulating layers 18 and 23.Furthermore, a plurality of pillar-shaped spacers 27 for forming the gapbetween the array substrate 1 and the counter substrate 2 are arrangedon an array pattern 1 p containing the signal line 21, the scanning line17, the TFT, etc.

A color filter 4 is formed on the protection insulating layer 23. Thecolor filter 4 includes an insulating characteristics, and alsofunctions as a resin layer for making flat unevenness caused by wiringson the substrate, etc. In this embodiment, the color filter 4 has aplurality of red colored layers, green colored layers, and blue coloredlayers. In addition, when arranging the color filter 4 on the countersubstrate 2, an insulating transparent resin layer is arranged on thearray substrate 1 as a planarization film in place of the color filter4. The transparent resin layer is arranged on the signal line, thescanning line, and the switching element, and makes flat unevenness ofthe array substrate surface produced by the wirings. That is, thetransparent resin layer covers approximately whole display region.

As mentioned-above, the array pattern 1 p is formed on the glasssubstrate 11. On the array pattern 1 p, the plurality of pillar-shapedspacers 27 as a spacer device are formed. An alignment film 28 is formedon the array pattern 1 p.

On the other hand, as shown in FIG. 3 and FIG. 5, the array pattern 1 pand the barrier pattern 60 are formed on the outside of the displayregion R1 on the glass substrate 11. In more detail, the array pattern 1p includes the driving circuits 6 a and 6 b, the interlayer insulatinglayer 18, the protection insulating layer 23, and a shield pattern 80 inthe outside of the display region R1.

The respective driving circuits 6 a and 6 b are arranged by sandwichingthe display region R and opposing each other in the row direction X.When forming the TFT, etc., the driving circuits 6 a and 6 b aresimultaneously formed by the same material as the TFT, for example,poly-silicon, etc. The driving circuits 6 a and 6 b are Y driversconnected to the scanning line 15 and an auxiliary capacitance linewhich is not illustrated.

The shield pattern 80 is formed of a resin layer, and is arrangedadjacent to the periphery of the color filter 4. The shield pattern 80is formed in the shape of a rectangular frame shape using a resin of alight blocking effect. The shield pattern 80 shields the light (backlight) which leaks from the outside of the display region R1.

In addition, the shield pattern 80 may be arranged on the countersubstrate 2 like the above-mentioned color filter 4. When arranging theshield pattern 80 on the counter substrate 2, the same transparent resinlayer as the planarization film, such as an acrylic film, for example,is arranged on the array substrate 1 in the display region R1 in placeof the shield pattern 80.

The array substrate 1 has a concave portion 1 d in the outside of thedisplay region R1. The concave portion 1 d is concaved toward the arraysubstrate 1 from the counter substrate 2. In this embodiment, theconcave portion 1 d is formed by removing a portion of the shieldpattern 80. The concave portion 1 d is formed approximately in the shapeof a rectangular frame along the seal material application region R2.

The barrier pattern 60 is arranged on the same resin layer as the shieldpattern so that the barrier pattern 60 sandwiches the display region R1along the periphery of the display region R1 of the rectangular shape,i.e., both the long ends. The barrier pattern 60 is formed in either oneof the array substrate 1 and the counter substrate 2, and includesprojections in the shape of a wall formed so as to have a small gapbetween the projection and the opposing substrate. In this embodiment,the barrier pattern 60 is formed on the array substrate 1 at theperiphery of the display region R1, and includes the projections 61 and62 of the shape of the wall having a small gap between the projections61, 62 and the counter substrates 2.

The projections 61 and 62 are formed on the shield pattern 80 (on theplanarization film formed of transparent resin when the shield pattern80 is arranged on the counter substrate 2). The projections 61 and 62extend in the column direction Y. The projection 61 is arranged at theperiphery of the display region R1 along the driving circuit 6 a. On theother hand, the projection 62 is arranged on the opposing side of theprojection 62 along the driving circuit 6 b.

In addition, the projections 61 and 62 may be arranged on the same resinlayer as the planarization film arranged at the periphery of the displayregion R1 of the array substrate 1.

The projections 61 and 62 suppress the spread of the seal material 51 tothe periphery of the array substrate 1 and the counter substrate 2 asmentioned later. The projections 61 and 62 are simultaneously formed inthe array substrate 1 with the same material as the pillar-shaped spacer27. The projections 61 and 62 are formed lower than the pillar-shapedspacer 27. However, the same height as the pillar-shaped spacer 27 maybe selected for the projections 61 and 62. Moreover, the shield pattern80 and the barrier pattern 60 are formed excepting for a portionopposing a liquid crystal injecting mouth 52 which is mentioned-later.

As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 5, the counter substrate 2is equipped with a glass substrate 41 as a transparent insulatingsubstrate. On the glass substrate 41, a counter electrode formed withtransparent electric conductive materials, such as ITO, and an alignmentfilm 29 are formed in order. As mentioned-above, a counter pattern 2 pis formed on the glass substrate 41.

The array substrate 1 and the counter substrate 2 are arranged opposingeach other with a predetermined gap by the plurality of pillar-shapedspacers 27. The seal material 51 is formed in the periphery of the arraysubstrate 1 and the counter substrate 2 in the shape of a rectangularframe, and is located between the periphery of the display region R1 andthe projections 61, and between the periphery of the display region R1and the projection 62.

The array substrate 1 and the counter substrate 2 are attached eachother by the seal material 51. The seal material 51 covers the wholedriving circuits 6 a and 6 b. The spread (spread to the row direction X)of the seal material 51 to the periphery of the array substrate 1 andthe counter substrate 2 is suppressed by the projections 61 and 62(barrier pattern 60). In addition, the projections 61 and 62 contact theside of the seal material 51. However, since the projections 61 and 62in the shape of a wall are formed for suppressing the spread of the sealmaterial 51, they may not necessarily become the form in which theprojections 61 and 62 always contact the whole portion of the sealmaterial 51, and may become a form in which the projections 61 and 62partially contact the seal material 51. The above-mentioned concaveportion 1 d is located, respectively between the shield pattern 80 andthe projection 61, and between the shield pattern 80 and the projection62. At least the outer edge portion of the seal material 51 isaccommodated in the concave portion ld.

The liquid crystal layer 3 is formed in a region surrounded by the arraysubstrate 1, the counter substrate 2, and the seal material 51. Theliquid crystal injecting mouth 52 is formed in a portion of the sealmaterial 51, and the liquid crystal injecting mouth is sealed with asealing agent 53. Thus, the liquid crystal display panel is formed.

FIG. 6 is an expanded sectional view showing a modification whichschematically shows the peripheral portion of the liquid crystal displaypanel taken along a line VII-VII of FIG. 3. In this modification, theprojections 61 and 62 are formed on the interlayer insulating layer 18and the protection insulating layer 23 laminated on the TFT in the arraysubstrate 1. The interlayer insulating layer 18 and the protectioninsulating layer 23 are replaced with the resin layer. The interlayerinsulating layer 18 is formed of insulating films of SiO2 and Si3N4.Also in this modification, the same effect as the embodiment shown inFIG. 5 can be acquired.

Next, the manufacturing method of the above-mentioned liquid crystaldisplay panel is explained. As shown in FIG. 7, first, a mother glasssubstrate 101 as the first mother substrate with a larger size than thearray substrate 1 is arranged as a transparent insulating substrate.According to this embodiment, the mother glass substrate 101 includessix array substrate formation regions R6 in the rectangular shape inorder to form the array substrate 1, and an non-used area R7 outside thearray substrate formation region R6. The mother glass substrate 101 isprovided with a first dividing proposed line e1 corresponding to theperiphery of the array substrate formation region R6.

On the arranged mother glass substrate 101, the array pattern 1 pincluding the signal line 21, the scanning line 17, the TFT, the drivingcircuits 6 a and 6 b, etc., are formed using a usual manufacturingprocess, that is, by repeating a film formation and a patterning of thefilm.

Subsequently, for example, transparent photosensitive resin of acrylictype is applied on the whole surface of the mother glass substrate 101using a spinner. Then, the transparent resin is dried. Furthermore,patterning exposure of the transparent resin is carried out using apredetermined photomask. Next, the resin is burned and cured afterdeveloping the exposed transparent resin. Thereby, as shown in FIG. 8,the pillar-shaped spacer 27 (not shown) and the projections 61 and 62are formed simultaneously.

Then, the alignment film 28 is formed by applying and patterning thealignment film material on the whole surface of the mother glasssubstrate 101 including the display region R1. In addition,predetermined orientation treatment (rubbing) is performed to thealignment film 28 if needed. Thereby, the six array substrates 1 arecompleted with the mother glass substrate 101.

FIG. 9 is a plan view showing the state where a plurality of countersubstrates is formed on the mother glass substrate in the manufacturingprocess of the above-mentioned liquid crystal display panel. In themanufacturing method of the counter substrate 2, first, the mother glasssubstrate 102 as a second mother substrate with a larger size than thecounter substrate 2 is arranged as a transparent insulating substrate.According to this embodiment, the mother glass substrate 102 has sixcounter substrate formation regions R8 of the rectangular shape, and annon-used region R9 in the outside of the counter substrate formationregion R8 in order to form the counter substrate 2. The mother glasssubstrate 102 has a second dividing proposed line e2 corresponding tothe periphery of the counter substrate formation region R8.

On the prepared mother glass substrate 102, the counter pattern 2 p isformed by the usual manufacturing process. The alignment film 29 isformed on the counter pattern 2P. In addition, the predeterminedorientation treatment (rubbing) is performed to the alignment film 29 ifneeded. Thereby, the six counter substrates 2 are completed with themother glass substrate 102.

FIG. 10 is a plan view showing the state where the seal material isapplied on the mother glass substrate. The seal material 51 is formed ina seal material application region R2 arranged in the whole peripheralregion of the array substrate 1. The seal material 51 is applied by aprinting method, for example, using ultraviolet curing type resin. Inmore detail, the above-mentioned resin in the frame shape is applied onthe array substrate 1 outside the display region R1 so that a portion ofabove-mentioned resin is made to project. The frame-like seal material51 with a convex pattern is formed by striding over the first dividingproposed line e1. Moreover, when forming the seal material 51, thecounter voltage supply electrode (which is not illustrated) forsupplying voltage to the counter substrate 2 from the array substrate 1is formed on the array substrate 1 in the circumference of the sealmaterial 51.

FIG. 11 is a plan view showing the state where the two mother glasssubstrates shown in FIG. 9 and FIG. 10 are attached through the sealmaterial 51. The counter arrangement of the mother glass substrate 101and the mother glass substrate 102 are made so that the alignment films28 and 29 oppose each other, and that a predetermined gap between thearray substrate 1 and the counter substrate 2 is held by a plurality ofpillar-shaped spacers 27. Then the peripheral portions of the arraysubstrate 1 and the counter substrate 2 are attached by the sealmaterial 51. Under the present circumstances, the spread of the sealmaterial 51 is suppressed by the projections 61 and 62.

Subsequently, the seal material 51 is irradiated with ultraviolet rayfrom exterior, and the seal material 51 is cured, and also thermalcuring is performed, and then, a complete curing is carried out.Thereby, the mother glass substrate 101 and the mother glass substrate102 are attached through the seal material 51.

Then, while dividing the mother glass substrate 101 along the firstdividing proposed line e1, and the mother glass substrate 102 is dividedalong the second dividing proposed line e2. When the mother glasssubstrates 102 and 103 are divided, respectively by drawing scribinglines along the first diving proposed line e1 and the second divingproposed line e2, for example. Thereby, the array substrate 1 is cutaway from the mother glass substrate 101, and the counter substrate 2 iscut away from the mother glass substrate 102, respectively. In thistime, the convex pattern which forms the liquid crystal injecting mouth52 in the seal material 51 is cut along the first dividing proposed linee1 and the second division proposed line e2.

Thereby, six vacant liquid crystal display panels shown in FIG. 3 aretaken from the divided mother glass substrates 101 and 102. In themethod of manufacturing the liquid crystal display panel according tothis invention, as shown in FIG. 12, the insulating layer commonlyformed in the adjacent array substrates 1 is arranged in the peripheralregions of the adjacent array substrates 1. The protrusions 61 and 62are formed on the insulating layer. The first dividing proposed line e1and the second dividing proposed line e2 are located in the centerbetween the protrusion 61 and the protrusion 62. The protrusion 61 and62 form the respective protrusions for one display panel and anotherdisplay panel.

Subsequently, liquid crystal material is injected by vacuum injectingmethod in the gap between the substrates of each liquid crystal displaypanel through the liquid crystal injecting mouth 52 shown in FIG. 1 andFIG. 3, which are formed in the seal material 51. Then, the liquidcrystal injecting mouth 52 is sealed with a sealing agent 53, such asultraviolet curing type resin. A liquid crystal is enclosed with theregion surrounded by the array substrate 1, the counter substrate 2, andthe seal material 51, and thereby the liquid crystal layer 3 is formed.Finally, six liquid crystal display panels are completed, respectively.

In the liquid crystal display panel and the manufacturing method of theliquid crystal display panel according the first embodiment constitutedas mentioned-above, the liquid crystal display panel includes the arraysubstrate 1, the counter substrate 2, the liquid crystal layer 3, theprojections 61 and 62, and the seal material 51. The projections 61 and62 are formed in the peripheral portion of the display region R1interposing the display region R therebetween in the array substrate 1and forming a gap between the projections 61 and 62 and the countersubstrate 2.

The seal material 51 is formed between the array substrate 1 and thecounter substrate 2, and arranged between the periphery of one side ofthe display region R1 and the projection 61, and between the peripheryof another side of the display region R1 and the projection 62, andattaches the array substrate 1 and the counter substrate 2. As for theseal material 51, the spread to the array substrate 1 and the countersubstrate 2 is suppressed by the projections 61 and 62.

According to this embodiment, the spread of the seal material 51 intothe display region R1 can be suppressed also in a liquid crystal displaypanel with a narrow frame width, and the display defect can beprevented. Since the spread of the seal material 51 to the periphery ofthe array substrate 1 and the counter substrate 2 is suppressed by theprojections 61 and 62, and the seal material 51 does not spread beyondthe first dividing proposed line e1 (the second dividing proposed linee2), the array substrate 1 and the counter substrate 2 can be divided ina good state from the mother glass substrates 101 and 102.

Moreover, when cutting down the liquid crystal display panels from themother glass substrate 101 and 102, the edge which cuts glass contactsthe portions of the mother glass substrates 101 and 102, correspondingto the projections 61 and 62, i.e., the dividing proposed lines e1 ande2. When the edge contacts the glass surface, since the wall-likeprojections 61 and 62 support glass, the pressure of the edge applied tothe glass surface is uniformly distributed in the glass. Therefore, itbecomes possible to cut the glass substrates without fault, like thatthe glass substrate may be chipped or broken at the time of the glasscutting.

In this embodiment, although the projections 61 and 62 are arranged onright-and-left sides of the peripheral portion of the display region R1in the liquid crystal display panel, the projections 65 and 66 may bearranged also on the upper and lower sides of the display region R1 ofthe liquid crystal display panel so that the display region R1 issurrounded as shown in FIG. 16. Here, the projection 65 is formed exceptfor the region facing the liquid crystal injecting mouth 52.

If the barrier pattern 60 is arranged as above-mentioned, it becomespossible to cut without generating fault, like that the glass substrateis chipped or broken at the time of the glass cutting.

Since the projections 61 and 62 can be formed simultaneously with thepillar-shaped spacers 27, the projections 61 and 62 can be formedwithout increasing the steps of the manufacturing process. Since theprojections 61 and 62 are formed lower than the pillar-shaped spacer 27,they can prevent the poor gap of the liquid crystal layer 3. For thisreason, deterioration of the display grace can be prevented when the gapof the liquid crystal layer 3 becomes uneven.

Moreover, if the height of the projections 61 and 62 is set to “a”, thegap between the array substrate 1 and the counter substrate 2 in theconcave portion 1 d to “b”, and the gap between the projections 61 and62 and the substrates facing the projections to “c”, when the figuressatisfy the relation of 0<c<a<b, it becomes possible to prevent the sealmaterial 51 from spreading beyond the divided proposed lines e1 and e2by the projections 61 and 62.

The array substrate 1 has the concave portion 1 d. Although the sealmaterial 51 spreads in the peripheral portion by attaching the motherglass substrates 101 and 102, a portion of the seal material 51 isaccommodated in the concave portion 1 d of the array substrate 1. Forthis reason, the spread of the seal material 51 can be suppressedfurther. Since the concave portion 1 d can be formed simultaneously whenforming the shield pattern 80, the concave portion 1 d can be formedwithout increasing the steps of the manufacturing process. Asdescribed-above, since the fault does not arise in the array substrate 1and the counter substrate 2, the liquid crystal display panel and themanufacturing method of the liquid crystal display device can beobtained with a narrow frame width.

Next, the liquid crystal display panel according to a second embodimentis explained. In addition, in this embodiment, the same structure asthat of the first embodiment as mentioned-above is denoted by the samemarks, and the detailed explanation is omitted. Moreover, themanufacturing method of the liquid crystal display panel is omitted.

As shown in FIG. 13, the barrier pattern 60 may be equipped with theprojection formed in double or triple. Here, the barrier pattern 60 isformed of two projections. The barrier pattern 60 includes anotherprojection 64 arranged on the outside of the display region, departingmore from the projection 61 (62) to the outside of the display region.In addition, like the projection 61 (62), the projection 64 puts a gapbetween the protrusion 64 and the counter substrate 2.

In the liquid crystal display panel according the second embodimentconstituted as mentioned-above, the liquid crystal display panel canacquire the same effect as the liquid crystal display panel according tothe first embodiment. Moreover, even if the seal material 51 runs on theprojection 61 or the projection 62, another projection (projection 64)located closer to the substrate end accommodates the overflowed sealmaterial. Accordingly, the overflow of the seal material 51 from theperiphery of the array substrate, and the periphery of the countersubstrate can be protected more certainly and effectively.

Moreover, it becomes possible to cut the glass substrates without thefault, like that the glass may be chipped or broken at the time of theglass cutting. As mentioned-above, the fault does not arise in the arraysubstrate and the counter substrate, and the liquid crystal displaypanel with narrow frame width can be obtained.

Next, the liquid crystal display panel according a third embodiment isexplained. In addition, in this embodiment, the same composition as thatof the first embodiment as mentioned-above is given the same mark, anddetailed explanation is omitted. Moreover, the manufacturing method ofthe liquid crystal display panel is omitted.

As shown in FIG. 14, the projections 61 and 62 are located in theperiphery of the array substrate 1 and the counter substrate 2,respectively. The respective projections 61 and 62 have cut planes whichare aligned with an approximately same plane as the end planes of thearray substrate 1 and the counter substrate 2, respectively.

In the manufacturing process of the above-mentioned liquid crystaldisplay panel, before taking the array substrates 1 and the countersubstrates 2 from the mother glass substrates 101 and 102, a projection70 is formed so that the projection 70 straddles the first dividingproposed line e1 (the second dividing proposed line e2) as shown in FIG.15. In detail, the insulating layer formed commonly to the adjacentarray substrates 1 is formed in the peripheral regions of the adjacentarray substrates 1. The protrusion 70 is formed on the insulating layer.The first dividing proposed line e1 and the second dividing proposedline e2 are located in the center of the protrusion 70. The dividedprotrusions form the respective protrusions for one display panel andanother display panel.

Then, scribing lines are drawn, and the mother glass substrates 101 and102 are divided along the first dividing proposed line e1 and the seconddividing proposed line e2. Since the crack formed in the mother glasssubstrate 101 progresses in the thickness direction of the mother glasssubstrate 101, the mother glass substrate 101 is divided along the firstdividing proposed line e1, and the projection 70 is also cut along thefirst dividing proposed line e1. In addition, the divided respectiveprojection 70 functions as the projection 61 of one liquid crystaldisplay panel, and the projection 62 of another liquid crystal displaypanel.

In the liquid crystal display panel according the third embodimentconstituted as mentioned-above, the liquid crystal display panel canacquire the same effect as the liquid crystal display panel accordingthe first embodiment. Moreover, since the projection 70 is arranged onthe first divided proposed line e1 (the second divided proposed linee2), when cutting the mother glass substrate 101, it is also necessaryto cut the projection 70. However, since the end of the projection 70,and the ends of the array substrate 1 and the counter substrate 2 arealigned with an approximately same plane, the seal material applicationregion R2 can be located closer to the substrate end compared with theliquid crystal display panel according to the first and secondembodiments.

Moreover, it becomes possible to cut the glass substrates without thefault, like that the glass may be chipped or broken at the time of theglass cutting. As mentioned-above, the fault does not arise in the arraysubstrate and the counter substrate, and the liquid crystal displaypanel with narrow frame width can be obtained.

The form of the projection is not limited to the shape of the stripe,and can be changed variously. For example, the form may be a rectangularframe shape (61, 62, 65, 66) as shown in FIG. 16. Neither the positionin which the projection of the projections pattern 60 is formed nor thenumber of the provided projections is limited to the embodiment asdescribed-above, and can be changed variously. For example, it isdesirable to arrange the projections in a position in which the sealmaterial 51 may overflow from the peripheries of the array substrate 1and the counter substrate 2.

The projection which the barrier pattern 60 includes may be arranged sothat the projection is arranged on either one of the array substrate 1and the counter substrate 2 so as to have a gap between the protrusionand the opposing substrate.

Although the concave portion (1 d) is arranged in the liquid crystaldisplay panel as mentioned-above, the concave portion (1 d) is notnecessarily required, and the concave portion (1 d) may just be arrangedif needed.

While certain embodiments have been described, these embodiments havebeen presented by way of example only, and are not intended to limit thescope of the inventions. In practice, the structural and method elementscan be modified without departing from the spirit of the invention.Various embodiments can be made by properly combining the structural andmethod elements disclosed in the embodiments. For example, somestructural and method elements may be omitted from all the structuraland method elements disclosed in the embodiments. Furthermore, thestructural and method elements in different embodiments may properly becombined. The accompanying claims and their equivalents are intended tocover such forms or modifications as would fall with the scope andspirit of the inventions.

1. A liquid crystal display panel, comprising: an array substrateincluding a display region and a peripheral region arranged adjacent tothe display region; a counter substrate including the display region andthe peripheral region, and arranged opposing the array substrate with agap therebetween; a resin layer formed on the peripheral region ofeither one of the array substrate and the counter substrate; aprotrusion in the shape of a wall arranged on the resin layer with a gapbetween the protrusion and the substrate opposing the protrusion; a sealmaterial formed between the array substrate and the counter substrate,and arranged between a peripheral portion of the display region and theprotrusion for attaching the array substrate and the counter substrate;and a liquid crystal layer formed in a surrounded region by the arraysubstrate, the counter substrate and the seal material.
 2. The liquidcrystal display panel according to claim 1, further comprising a resinshield pattern formed in the peripheral region, wherein the resin layeris formed of the same material as the shield pattern.
 3. The liquidcrystal display panel according to claim 1, further comprising a resinplanarization film formed in the display region, wherein the resin layeris formed of the same material as the planarization resin film.
 4. Theliquid crystal display panel according to claim 1, further comprising aplurality of pillar-shaped spacers formed on either one of the arraysubstrate and the counter substrate, wherein the protrusion is formed ofthe same material as the spacer.
 5. The liquid crystal display panelaccording to claim 1, wherein the protrusion includes a first protrusionelement arranged adjacent to the seal material and a second protrusionelement arranged adjacent to the first protrusion element in an oppositeside of the seal material.
 6. The liquid crystal display panel accordingto claim 1, wherein the protrusion is arranged so that the protrusion isarranged in a same plane as end planes of the respective peripheralportions of the array substrate and the counter substrate.
 7. The liquidcrystal display panel according to claim 1, wherein the array substratefurther includes a concave portion located between the seal material andthe protrusion, and at least a perimeter portion of the seal material isaccommodated in the concave portion:
 8. The liquid crystal display panelaccording to claim 1, wherein the array substrate and the countersubstrate are respectively formed in the rectangular shape, and theprotrusion includes a first protrusion and a second protrusion,respectively formed on the peripheral region located along one endportion and another end portion opposing the one end portion of thearray substrate or the counter substrate.
 9. A liquid crystal displaypanel, comprising: an array substrate including a display region and aperipheral region arranged adjacent to the display region; a countersubstrate including the display region and the peripheral region, andarranged opposing the array substrate with a gap therebetween; aswitching transistor formed in the display region of the array substrateand an insulating layer covering the switching transistor and extendingto the peripheral region; a protrusion in the shape of a wall arrangedon the insulating layer in the peripheral region with a gap between theprotrusion and the array substrate opposing the protrusion; a sealmaterial formed between the array substrate and the counter substrate,and arranged between a peripheral portion of the display region and theprotrusion for attaching the array substrate and the counter substrate;and a liquid crystal layer formed in a surrounded region by the arraysubstrate, the counter substrate and the seal material.
 10. The liquidcrystal display panel according to claim 9, further comprising aplurality of pillar-shaped spacers formed on at least one of the arraysubstrate and the counter substrate, wherein the protrusion is formed ofthe same material as the spacer.
 11. The liquid crystal display panelaccording to claim 9, wherein the protrusion includes a first protrusionelement arranged adjacent to the seal material and a second protrusionelement arranged adjacent to the first protrusion element in an oppositeside of the seal material.
 12. The liquid crystal display panelaccording to claim 9, wherein the protrusion is arranged so that theprotrusion is arranged in a same plane as end planes of the respectiveperipheral portions of the array substrate and the counter substrate.13. The liquid crystal display panel according to claim 9, wherein thearray substrate further includes a concave portion located between theseal material and the protrusion, and at least a perimeter portion ofthe seal material is accommodated in the concave portion:
 14. The liquidcrystal display panel according to claim 9, wherein the array substrateand the counter substrate are respectively formed in the rectangularshape, and the protrusion includes a first protrusion and a secondprotrusion, respectively formed on the peripheral region located alongone end portion and another end portion opposing the one end portion ofthe array substrate or the counter substrate.
 15. The liquid crystaldisplay panel according to claim 9, wherein the insulating layer isformed of at least one of a SiO2 film and a SiN3 film.
 16. A method ofmanufacturing a liquid crystal display panel including: an arraysubstrate including a display region and a peripheral region arrangedadjacent to the display region; and a counter substrate including thedisplay region and the peripheral region, and arranged opposing thearray substrate with a gap therebetween; comprising the steps: formingrespective array patterns on a first array substrate and a second arraysubstrate corresponding to a first display panel and a second displaypanel on a first mother glass substrate; forming respective counterpatterns on a first counter substrate and a second counter substratecorresponding to the first display panel and the second display panel ona second mother glass substrate; forming a common insulating layercovering the peripheral regions of the first and second display panelson either one of the first and second mother glass substrates; forming afirst protrusion and a second protrusion of the wall shape on theinsulating layer; forming a plurality of pillar-shaped spacers betweenthe array substrate and the counter substrate so as to have a gaptherebetween; attaching the array substrate and the counter substrate bya seal material provided between the peripheral portion of the displayregion and the protrusion; and cutting the first and second mother glasssubstrates in a region between the first protrusion and the secondprotrusion from external surfaces of the mother glass substrates. 17.The method of manufacturing a liquid crystal display panel according toclaim 16, further comprising a resin shield pattern formed in theperipheral region, wherein the insulating layer is formed of the samematerial as the shield pattern.
 18. The method of manufacturing a liquidcrystal display panel according to claim 16, further comprising a resinplanarization film formed in the peripheral region, wherein theinsulating layer is formed of the same material as the planarizationresin film.
 19. The method of manufacturing a liquid crystal displaypanel according to claim 16, wherein the liquid crystal display panelincludes a switching transistor formed in the display region of thearray substrate, a protection insulating layer and an interlayerinsulating layer formed on the switching transistor and extending to theperipheral region, and the insulating layer in the peripheral region isformed of the protection insulating layer and the interlayer insulatinglayer.
 20. A method of manufacturing a liquid crystal display panelincluding an array substrate having a display region and a peripheralregion arranged adjacent to the display region; and a counter substratehaving the display region and the peripheral region, and arrangedopposing the array substrate with a gap therebetween; comprising thesteps: forming respective array patterns on a first array substrate anda second array substrate corresponding to a first display panel and asecond display panel on a first mother glass substrate; formingrespective counter patterns on a first counter substrate and a secondcounter substrate corresponding to the first display panel and thesecond display panel on a second mother glass substrate; forming acommon insulating layer covering the peripheral regions of the first andsecond display panels on either one of the first and second mother glasssubstrates; forming a protrusion of the wall shape on the insulatinglayer; forming a plurality of pillar-shaped spacers between the arraysubstrate and the counter substrate so as to have a gap therebetween;attaching the array substrate and the counter substrate by a sealmaterial provided between the peripheral portion of the display regionand the protrusion; and cutting the first and second mother glasssubstrates in a center of the protrusion from respective externalsurfaces of the first and second mother glass substrates so as to dividethe protrusion into two protrusions.